| 局地强对流暴雨的多普勒天气雷达个例分析 |
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| 引用本文： | 丁青兰 秦勇 陈明轩 谭晓光. 局地强对流暴雨的多普勒天气雷达个例分析[J]. 气象科技, 2006, 34(3): 286-290,i0001 |
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| 作者姓名： | 丁青兰 秦勇 陈明轩 谭晓光 |
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| 作者单位： | 北京市气象台,北京,100089;中国气象局大气探测技术中心,北京,100081;北京城市气象研究所,北京,100089 |
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| 基金项目： | 国家科技攻关项目;北京市科技攻关项目;国家科技攻关项目 |
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| 摘 要： | 从天气背景的分析出发,利用多普勒天气雷达的强度、速度资料以及由速度资料反演的垂直风廓线和二维风场对一次北京局地暴雨从开始到强降水结束时段做了详细的分析。分析发现,这次局地强对流暴雨是大尺度系统和中尺度系统共同作用的结果,大尺度环流为暴雨提供了充沛的水汽;本站层结有很大的不稳定度,为强对流风暴的产生提供了必要条件;低层中尺度辐合线起到了触发对流和加强对流的作用。
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| 关 键 词： | 局地暴雨 中气旋 垂直风廓线 VAP风场 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005-01-102005-03-12 |
A Case Study of Local Torrential Rainfall Caused by Severe Convection with Doppler Weather Radar Data |
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| Ding Qinglan,Qin Yong,Chen Mingxuan,Tan Xiaoguang. A Case Study of Local Torrential Rainfall Caused by Severe Convection with Doppler Weather Radar Data[J]. Meteorological Science and Technology, 2006, 34(3): 286-290,i0001 |
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| Authors: | Ding Qinglan Qin Yong Chen Mingxuan Tan Xiaoguang |
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| Affiliation: | 1 Beijing Meteorologieal Offiee, Beijing 100089; 2 Atmospherie Observation Technology Center, CMA, Beijing 100081; 3 Institute of Urban Meteorology, CMA, Beijing 100089 |
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| Abstract: | Through analyzing the weather situation,a local torrential rain event is analyzed in detail based on the intensity and velocity data from Doppler weather radar as well as vertical wind profilers and two dimensional wind fields derived from velocity data.It is found out that this highly convective local torrential rainfall was caused by both large-scale and mesoscale weather systems.The large-scale circulation provided abundant vapors for the torrential rain;the stratification in Bejing was very unstable,which is a necessary condition for the severe storms;and the low-level mesoscale convergence line triggered and intensified the convection. |
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| Keywords: | local torrential rain mesoscale cyclone vertical wind profiler VAP wind field |
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